DE2437804A1 - Radial ventilator has adjustable spiral - which controls ventilator output at constant speed - Google Patents

Radial ventilator has adjustable spiral - which controls ventilator output at constant speed

Info

Publication number
DE2437804A1
DE2437804A1 DE2437804A DE2437804A DE2437804A1 DE 2437804 A1 DE2437804 A1 DE 2437804A1 DE 2437804 A DE2437804 A DE 2437804A DE 2437804 A DE2437804 A DE 2437804A DE 2437804 A1 DE2437804 A1 DE 2437804A1
Authority
DE
Germany
Prior art keywords
ventilator
constant speed
spiral
radial
adjustable spiral
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
DE2437804A
Other languages
German (de)
Inventor
Karl-Heinz Kaup
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KAUP KARL HEINZ
Original Assignee
KAUP KARL HEINZ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KAUP KARL HEINZ filed Critical KAUP KARL HEINZ
Priority to DE2437804A priority Critical patent/DE2437804A1/en
Publication of DE2437804A1 publication Critical patent/DE2437804A1/en
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/462—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The radial ventilator has a sheet metal spiral housing, the end of which is attached to a lever. By rotating the lever, the contour of the spiral can be adjusted between a maximum and a minimum position. The rotor of the ventilator has both forward pointing and trailing blades. The pump is designed to work at a certain minimum pressure and a minimum output volume. By varying the position of the lever and the outline of the spiral, pressure and volume can be steplessly adjusted without changing the speed of the drive.

Description

Radial-Ventilator mit regelbarer Spirale.Radial fan with adjustable spiral.

Die Erfindung bezieht sich auf die Regelung der Spiralgehäuse von Radialventilatoren mit vorwärts- ( 1 ) und rückwärtsgekrümmten ( 2 ) Schaufeln, wie sie in der Hauptsache für Luftheizgeräte, Klimaapparate sowie für Be- und Entlüftungszwecke verwendet werden, und zwar für Radialventilatoren mit einem Gesamtdruck ( statisch und dynamisch ) von mindestens 100 Pascal und einem Fördervolumen von mindestens 1000 N 1117h.The invention relates to the regulation of the scroll housing of centrifugal fans with forward (1) and backward curved (2) blades, as they are mainly used for air heaters, air conditioners and for Ventilation purposes can be used for centrifugal fans with a total pressure (static and dynamic) of at least 100 Pascal and a delivery volume of at least 1000 N 1117h.

Radialventilatoren der genannten Art werden üblicherweise von einem Elektro- Motor direkt oder indirekt über einen Keilriemenantrieb angetrieben.Radial fans of the type mentioned are usually from an electric motor directly or indirectly via a V-belt drive driven.

Eine Regelung derartiger Radialventilatoren war bisher nur über drehzahlveränderliche Motoren oder über regelbare Keilriemenantriebe möglich.Control of such centrifugal fans was previously only possible via variable-speed motors or controllable ones V-belt drives possible.

In der Praxis zeigt es sich immer wieder, daß die errechneten Widerstände bezogen auf das Kanalsystem nach der Montage höher oder tiefer liegen. Damit ändert sich natürlich auch der geförderte Volumenstrom und die erforderliche Motorenleistung. Ist der Widerstand des angeschlossenen Kanalsystems kleiner als berechnet, steigt das Fördervolumen und somit die erforderliche Motorleistung, was in der Praxis sehr große Schwierigkeiten bereitet.In practice it has been shown again and again that the calculated resistances based on the duct system according to higher or lower during assembly. This of course also changes the volume flow and the required engine power. If the resistance of the connected duct system is less than calculated, it increases the delivery volume and thus the required engine power, which in practice is very difficult prepares.

Die Erfindung bezweckt die Ausbildung einer regelbaren Spirale ( 3 ), sodaß das Gleichgewicht zwischen Fördervolumen und Kanalwiderstand genau eingestellt werden kann, obwohl die Drehzahl des Radialventilators konstant bleibt.The invention aims to form an adjustable spiral (3), so that the balance between the delivery volume and duct resistance can be set precisely, although the speed of the centrifugal fan is constant remain.

Außerdem ist eine Volumenregelung bei konstanter Drehzahl, d. h. mit einstufigen Motoren stufenlos in einemIn addition, a volume control at constant speed, i. H. with single-stage motors, steplessly in one

vorgegebenen Bereich ( Max Min. ) bei konstanterspecified range (Max Min.) at constant

Drehzahl möglich, was sonst nur mit sehr teuren regelbaren Motoren über die veränderliche Drehzahl erreicht werden kann.Speed possible, which is otherwise only achieved with very expensive controllable motors via the variable speed can be.

Unterschriftsignature

809808/0132809808/0132

Claims (2)

PATENTANSPRÜCHEPATENT CLAIMS Radialventilator mit regelbarer Spirale ( 3 ) für vorwärts- ( 1 ) und rückwärtsgekrümmte ( 2 ) Schaufeln und einem Gesamtdruck ( statisch und dynamisch ) von mindestens 100 Pascal, und einem Fördervolumen von mindestens 1000 N m /h,Centrifugal fan with adjustable spiral (3) for forward (1) and backward curved (2) blades and a total pressure (static and dynamic) of at least 100 Pascal, and one Delivery volume of at least 1000 N m / h, 2. ) Radialventilator nach Anspruch 1,2.) centrifugal fan according to claim 1, gekennzeichnet dadurch, daß über eine veränderliche Spirale ( 3 ) bei konstanter Drehzahl in einem vorgegebenencharacterized in that a variable spiral (3) at constant Speed in a given Bereich ( Max Min. ) jeder ZustandRange (Max Min.) Every state ( Druck und Volumen ) stufenlos eingestellt werden kann.(Pressure and volume) can be continuously adjusted. Unterschriftsignature 609808/0132609808/0132
DE2437804A 1974-08-06 1974-08-06 Radial ventilator has adjustable spiral - which controls ventilator output at constant speed Ceased DE2437804A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2437804A DE2437804A1 (en) 1974-08-06 1974-08-06 Radial ventilator has adjustable spiral - which controls ventilator output at constant speed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2437804A DE2437804A1 (en) 1974-08-06 1974-08-06 Radial ventilator has adjustable spiral - which controls ventilator output at constant speed

Publications (1)

Publication Number Publication Date
DE2437804A1 true DE2437804A1 (en) 1976-02-19

Family

ID=5922563

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2437804A Ceased DE2437804A1 (en) 1974-08-06 1974-08-06 Radial ventilator has adjustable spiral - which controls ventilator output at constant speed

Country Status (1)

Country Link
DE (1) DE2437804A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0433939A1 (en) * 1989-12-20 1991-06-26 Euroclima S.P.A. Device for stepless controlling the volume flow of radial blowers
WO2011023508A1 (en) * 2009-08-31 2011-03-03 Behr Gmbh & Co. Kg Radial fan housing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0433939A1 (en) * 1989-12-20 1991-06-26 Euroclima S.P.A. Device for stepless controlling the volume flow of radial blowers
WO2011023508A1 (en) * 2009-08-31 2011-03-03 Behr Gmbh & Co. Kg Radial fan housing

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Legal Events

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8131 Rejection